[bug][Reported by P. Grzesina, univ. of Regina] Sympa issued errors when trying to setupe a CAS server for SSO login. This was due to Sympa setting a hash value to scalar and then trying to use this value as a hash ref. Fixed by deleting affectation to scalar value - which is immediately changed to a hash anyway.

git-svn-id: https://subversion.renater.fr/sympa/branches/sympa-6.2-branch@12058 05aa8bb8-cd2b-0410-b1d7-8918dfa770ce